/Engine/Plugins/Runtime/RigVM/Source/RigVMEditor/Public/Widgets/SRigVMGraphNode.h
Populate the brushes array with any overlay brushes to render
virtual void GetOverlayBrushes ( bool bSelected, const FVector2D WidgetSize, [TArray](API\Runtime\Core\Containers\TArray)< [FOverlayBrushInfo](API\Editor\GraphEditor\FOverlayBrushInfo) > & Brushes ) const